<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    div {
      width: 500px;
      height: 500px;
      border-radius: 2%;
      background-image: linear-gradient(to right,#e2c1ec 0%,#c1c3ec);
      
    }
    button {
      width: 300px;
      border-radius: 5%;
      
      background: linear-gradient(to right,#e2c1ec 0%,#c1c3ec);
    }
  
  </style>
</head>
<body>
  <div>
   <button>登  录</button>
   <dv></dv>
   <dv></dv>
   <dv></dv>
   <dv></dv>
   <dv></dv>
  </div>
  
</body>
</html>